the one you have a picture of is meant for a distributor driven ignition system ... you are looking for a distributor-less ignition system box, marked DIS by MSD ...

but even if you get it working you will see no improvement ... the only way to add power with a ignition is to advance timing or get a hotter spark if you are running massive amounts of boost which has a tendency to snuff out the spark. aka ...t he programmable DIS-2 ... BUT, here comes that but again, with a dual spark plug system like the XF its not as simple as just wiring it up cause the spark plugs alternate which one fires which the MSD cannot do ... so its just asking for more trouble than its worth unless you are going forced induction route and need the ability to retard timing and intend to make the plugs fire both at once reducing their life span and altering the way the system was intended to work.

in the long run, if you are just looking for more power out of your NA engine ... get a chip retune which will give you the extra timing without robbing you of the dual spark alternating fire feature ... except that won't play well with your nitrous setup kaboom ...